| Index | Del Mar Heights | Texas | National |
| Average Test Scores | n/a | 47% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Del Mar Heights | Texas | National |
| Completed 8th grade | 92.1% | 79.3% | 84.3% |
| Completed high school | 92.1% | 77.8% | 83.0% |
| Completed some college | 0.0% | 57.3% | 59.4% |
| Completed associate degree | 0.0% | 34.9% | 38.5% |
| Completed bachelors | 0.0% | 28.1% | 30.3% |
| Completed masters | 0.0% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Del Mar Heights. Using the proficiency score averages, the average test scores for Del Mar Heights, TX schools is n/a. The average student to teacher ratio is n/a. In Del Mar Heights, TX, an average of 92.1% of students have completed 8th grade and an average of 92.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Olmito, TX | 1,255 | 63% | 30.2% |
| Los Fresnos, TX | 7,767 | 57% | 17.9% |
| Brownsville, TX | 182,230 | 52% | 7.9% |
| San Benito, TX | 24,259 | 43% | 10.8% |
| Port Isabel, TX | 6,278 | 39% | 18.2% |
| Del Mar Heights, TX | 163 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Aquilla, TX | 163 | 60% | 24.0% |
| Westby, MT | 163 | 50% | 4.2% |
| Dell City, TX | 163 | 20% | 58.3% |
| Yoder, KS | 163 | 30% | 37.5% |
| Dayville, OR | 162 | 50% | 4.2% |
| Del Mar Heights, TX | 163 | n/a |
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